为提高油泵油咀偶件的质量和寿命,从一九七五年开始,我们对柱塞和油咀两付偶件进行了固体渗硼、气体碳氮硼三元共渗和离子氮化三种化学热处理工艺试验,并做了冷加工的有关试验和快速磨损对比试验。最后对十余台固体渗硼柱塞偶件试验泵做了装机长期使用考核,取得了良好的效果。第一批固体渗硼柱塞偶件经一年多的实际使用,至今大部分都工作 In order to improve the quality and service life of the pump oil nozzle, from the beginning of 1975, we carried out solid boronizing on both the plunger and the oil nozzle, and gas carbonitriding boron ternary and ion nitrilotris Chemical heat treatment process test, and made cold-related tests and rapid wear comparison test. Finally, more than ten sets of solid boronizing plunger test pump made a long-term use of installed capacity assessment, and achieved good results. The first batch of solids boring plugs coupled with more than a year of actual use has so far mostly worked